在Spring Boot中放置@Bean的位置？ [英] Where to put @Bean in Spring Boot?

问题描述

我想知道Spring Boot应用程序注册其他bean的最佳位置是什么。我有一个使用 @SpringBootApplication 注释的Main类，并且拾取了该类中定义的bean。但是当我把那些豆子放在另一个班级时，它似乎没有被注册。

I am wondering what the best place would be for a Spring Boot app to register additional beans. I have a Main class that is annotated with @SpringBootApplication and beans defined in that class are picked up. But when i put those beans in another class it seems that the are not being registered.

在阅读文档时我明白了 @ SpringBootApplication 将隐式搜索其中包含 @Bean 注释的类。

When reading the documentation i got the idea that the @SpringBootApplication would implicitly search for classes that have @Bean annotations in them.

所以我的选择现在是：

1. 将所有 @Bean 带注释的bean放入我的主要课程

1. Put all @Bean annotated bean in my main class

@SpringBootApplication
public class MyApplication {

    @Bean
    public Filter AuthenticationFilter() {
        return new AuthenticationFilter();
    }

    public static void main(String[] args) {
        SpringApplication.run(MyApplication.class, args);
    }
}

创建配置类并使用 @Configuration

@Configuration
public class MyConfiguration {
    @Bean
    public Filter AuthenticationFilter() {
        return new AuthenticationFilter();
    }
}

有没有更好的方法呢？

推荐答案

这几乎是一个偏好问题，但它通常被认为是最好的练习将暴露的bean放在逻辑上分组的配置类中。

It is pretty much a matter of preference, but it is generally considered best practice to put exposed beans in configuration classes, which are logically grouped.

例如，您可能有几个配置类，其中包含多个bean：身份验证配置用于AuthenticationProvider或UserDetailsS​​ervice的bean的类;一个Thymeleaf配置类，包含各种Thymeleaf方言等的bean。

For example, you might have several configuration classes with a number of beans contained within each: An authentication configuration class with beans for AuthenticationProvider or UserDetailsService; a Thymeleaf configuration class containing beans for various Thymeleaf dialects, etc.

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